| 4901 | Hickory Petroleum Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jun 2013 |
| 4902 | Hickox Oil Texas Company, Inc. | Mobile, AL 36689 | Oil & Gas Operator | Feb 1996 |
| 4903 | Hicon Gas Producers, Inc. | New York, NY 10110 | Oil & Gas Operator | Oct 1999 |
| 4904 | Hidalgo Oil & Exploration Corp. | New Braunfels, TX 78131 | Oil & Gas Operator | May 2024 |
| 4905 | Higginbotham, O. V. | Cedar Park, TX 78613 | Oil & Gas Operator | Jul 1996 |
| 4906 | High Bluff Operating, LLC | Littleton, CO 80161 | Oil & Gas Operator | May 2018 |
| 4907 | High Chapparal Oil Company | Plntersville, TX 77363 | Oil & Gas Operator | Aug 2003 |
| 4908 | High Desert Resources, L.L.C. | Midland, TX 79704 | Oil Operator | May 2024 |
| 4909 | High Island Gas LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 4910 | High Island Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 2017 |
| 4911 | High Mountain Oil & Gas | Hobbs, NM 88240 | Oil & Gas Operator | Jan 2019 |
| 4912 | High Mountain Oil & Gas, LLC | Hobbs, NM 88240 | Oil & Gas Operator | May 2024 |
| 4913 | High Plains Gas Systems, Inc. | Houston, TX 77019 | Oil & Gas Operator | May 2024 |
| 4914 | High Plains Petroleum LLC | Bentonville, AR 72712 | Gas Operator | Jan 2024 |
| 4915 | High River Res Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2024 |
| 4916 | High Sierra Operating, LTD. | Canyon Lake, TX 78133 | Oil & Gas Operator | Mar 2008 |
| 4917 | High Sky Oil & Gas | Midland, TX 79705 | Oil & Gas Operator | Jun 2008 |
| 4918 | High Sky Partners LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2015 |
| 4919 | Higher Standard Oil Company,Inc. | Frisco, TX 75034 | Oil Operator | May 2024 |
| 4920 | Highground, Inc. | Abilene, TX 79605 | Oil & Gas Operator | May 2024 |
| 4921 | Highland Production Company | Midland, TX 79701 | Oil & Gas Operator | Mar 1996 |
| 4922 | Highmark Energy Operating, LLC | Poynor, TX 75782 | Oil & Gas Operator | May 2024 |
| 4923 | Highmount Expl & Prod Texas LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2014 |
| 4924 | Highmount Operating LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2014 |
| 4925 | Highpeak Energy Holdings, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 4926 | Hightower Exploration | Kilgore, TX 75662 | Oil & Gas Operator | May 2024 |
| 4927 | Hightower Oil & Gas | Cairo, IL 62914-0401 | Oil Operator | Nov 2014 |
| 4928 | Hilbers Oil & Gas | Archer City, TX 76351 | Oil & Gas Operator | Oct 2002 |
| 4929 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | May 2024 |
| 4930 | Hill Operating LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Nov 2023 |
| 4931 | Hill Production Co Inc-Wisconsin | Humble, TX 77347 | Oil & Gas Operator | Jun 1993 |
| 4932 | Hill Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2009 |
| 4933 | Hill, A G | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 4934 | Hill, Albert, Trust | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 4935 | Hill, Bill | Kilgore, TX 75663 | Oil Operator | Mar 2014 |
| 4936 | Hill, Charles Drilling, Inc. | Grand Prairie, TX 75052 | Oil & Gas Operator | May 2024 |
| 4937 | Hill, Hub, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jan 1994 |
| 4938 | Hill, R.M. Operating Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 4939 | Hill, T. R. | Graham, TX 76450 | Oil & Gas Operator | Apr 1995 |
| 4940 | Hill-Lake Gas Storage, L.P. | Houston, TX 77057 | Oil & Gas Operator | Aug 2010 |
| 4941 | Hill-Lake Gas Storage, LLC | Tulsa, OK 74172 | Oil & Gas Operator | May 2024 |
| 4942 | Hillcrest Petroleum, LLC | Midland, TX 79707 | Oil & Gas Operator | Jun 2019 |
| 4943 | Hilliard Oil | Bronte, TX 76933 | Oil & Gas Operator | Mar 2008 |
| 4944 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 4945 | Hillin Prod. Co. | Odessa, TX 79760 | Oil & Gas Operator | Apr 2002 |
| 4946 | Hillin Simon/Prime Expl., L.C. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 4947 | Hillin, T. A. | Kerrville, TX 78028 | Oil & Gas Operator | Aug 2020 |
| 4948 | Hillin-Simon Oil Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2013 |
| 4949 | Hillside Oil & Gas, Inc. | Midland, TX 79708 | Oil & Gas Operator | Nov 1999 |
| 4950 | Hillside Oil & Gas, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2016 |
| 4951 | Hilltex Operating Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2021 |
| 4952 | Hilltop Petroleum LLC | Weatherford, TX 76086 | Oil & Gas Operator | May 2024 |
| 4953 | Hillwood Energy Texas, L.P. | Fort Worth, TX 76177 | Gas Operator | Jan 2010 |
| 4954 | Hillwood O & G Operating Co LP | Fort Worth, TX 76102 | Gas Operator | May 2024 |
| 4955 | Hilty Interests, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Jun 1989 |
| 4956 | Hindman, E. C. Jr. Partnership | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2008 |
| 4957 | Hinds Petroleum, LLC | Houston, TX 77263 | Oil Operator | May 2024 |
| 4958 | Hinds Petroleum, LP | Houston, TX 77263 | Oil Operator | Feb 2017 |
| 4959 | Hines, Ralph, Jr. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2002 |
| 4960 | Hinkle Engineering, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2016 |
| 4961 | Hinkle, Howard L. | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2024 |
| 4962 | Hinton Production Company | MT Pleasant, TX 75455 | Oil & Gas Operator | Aug 1995 |
| 4963 | Hinton, W. B. | MT Pleasant, TX 75455 | Oil & Gas Operator | Jul 1993 |
| 4964 | Hipp Oil And Gas Inc. | Big Spring, TX 79720 | Oil & Gas Operator | May 2024 |
| 4965 | HK Energy Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 4966 | HMH Operators, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 4967 | HMT Genesis Petroleum Corp. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 2008 |
| 4968 | HMX Investments Inc | Katy, TX 77494 | Oil & Gas Operator | Jan 2024 |
| 4969 | HNG Storage Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2002 |
| 4970 | Hobbs Energy Corporation | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 4971 | Hoc Operating Co., Inc. | Houston, TX 77056 | Oil & Gas Operator | Nov 1999 |
| 4972 | Hoco Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2024 |
| 4973 | Hodgden Operating Co., Inc. | Enid, OK 73702 | Oil & Gas Operator | Feb 2024 |
| 4974 | Hodgden, Jack D. | Enid, OK 73702 | Oil & Gas Operator | Apr 2000 |
| 4975 | Hodge T F | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2007 |
| 4976 | Hodges & Hodges Productions | Anson, TX 79501 | Oil & Gas Operator | Aug 2003 |
| 4977 | Hodges & Rister | Abilene, TX 79603 | Oil & Gas Operator | Apr 2016 |
| 4978 | Hodges, James Aaron | Fort Worth, TX 76179 | Oil & Gas Operator | May 2024 |
| 4979 | Hodges, Thomas | Alvord, TX 76225 | Oil & Gas Operator | Oct 2002 |
| 4980 | Hoell Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 4981 | Hoelscher, Weldon | San Angelo, TX 76904 | Oil & Gas Operator | Aug 2003 |
| 4982 | Hoermann, S. E. | Seguin, TX 78155 | Oil & Gas Operator | May 2024 |
| 4983 | Hofco, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 4984 | Hoffmann Oil Company | Eastland, TX 76448 | Oil & Gas Operator | May 2024 |
| 4985 | Hog Operating LLC | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 4986 | Hogan, Wayne Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jun 2006 |
| 4987 | Hoggard, Kenneth | Loving, TX 76460 | Oil & Gas Operator | May 2024 |
| 4988 | Holbein & Wright Resources Inc. | Bandera, TX 78003 | Oil & Gas Operator | May 2024 |
| 4989 | Holco Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | May 2024 |
| 4990 | Holcomb Company, The | Freer, TX 78357 | Oil & Gas Operator | Aug 1996 |
| 4991 | Holcomb Enterprises | Clyde, TX 79510 | Oil & Gas Operator | Aug 2003 |
| 4992 | Holden Energy Corporation | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2015 |
| 4993 | Holden Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Dec 2023 |
| 4994 | Holifield Oil Company | Giddings, TX 78942 | Oil & Gas Operator | Mar 2009 |
| 4995 | Holland Oil & Gas | Brookesmith, TX 76827 | Oil & Gas Operator | Dec 2010 |
| 4996 | Holland Oil Co. | Petrolia, TX 76377 | Oil Operator | Aug 2010 |
| 4997 | Holland, W. M. | Petrolia, TX 76377 | Oil & Gas Operator | Jul 2009 |
| 4998 | Hollandsworth & Travis | Longview, TX 75606 | Oil & Gas Operator | Mar 2001 |
| 4999 | Holler Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Aug 2003 |
| 5000 | Holley Oil Company, LLC | Chappell Hill, TX 77426 | Oil & Gas Operator | May 2024 |